match MDN wins on depth, clarity, and structure; W3Schools is more concise
Concordance
70%
Rating confidence · A Provisional ★☆☆☆☆ · 1 match · B Provisional ★☆☆☆☆ · 1 match
Match analysis
The match was decided on depth, clarity, and structure, where MDN's comprehensive curriculum clearly outperformed W3Schools' superficial list of examples. MDN's factuality and epistemic honesty also gave it an edge, as W3Schools made some misleading absolute claims. W3Schools scored points on conciseness, being much shorter and to the point. However, its lack of depth and poor organization made it the weaker text overall. MDN is the clear winner for learners, while W3Schools may serve as a quick reminder for those already familiar with JavaScript.
Verdict by axis
Bar width reflects axis relevance. A · B
Per-axis detail
Foundation
Sourcing
Both texts are introductory tutorials without formal citations. Sourcing is not applicable.
N/A
Sourcing
Both texts are introductory tutorials without formal citations. Sourcing is not applicable.
Factuality
text A is factually accurate. text B contains some oversimplifications (e.g., 'JavaScript is the programming language of the web') but no outright errors. Pass-1 noted more inaccuracies in B, but pass-2 found both correct. The consolidated verdict gives a slight edge to A.
A wins slightly 2.7 – 0.7
▾ 2 evidences
Factuality
text A is factually accurate. text B contains some oversimplifications (e.g., 'JavaScript is the programming language of the web') but no outright errors. Pass-1 noted more inaccuracies in B, but pass-2 found both correct. The consolidated verdict gives a slight edge to A.
▾ 2 evidences
Internal Coherence
text A is logically structured with prerequisites and progressive tutorials. text B jumps between unrelated examples and has a disjointed flow. Pass-1 noted contradictions in B; pass-2 found both consistent, but A's coherence is clearly superior.
A wins clearly 3.3 – 0
▾ 3 evidences
Internal Coherence
text A is logically structured with prerequisites and progressive tutorials. text B jumps between unrelated examples and has a disjointed flow. Pass-1 noted contradictions in B; pass-2 found both consistent, but A's coherence is clearly superior.
▾ 3 evidences
Form
Clarity
text A explains concepts in plain language with context. text B uses short sentences but lacks explanation, assuming prior knowledge. Both passes agree A is clearer.
A wins clearly 5 – 0
▾ 1 evidence
Clarity
text A explains concepts in plain language with context. text B uses short sentences but lacks explanation, assuming prior knowledge. Both passes agree A is clearer.
▾ 1 evidence
Structure
text A has a clear, logical structure with sections for prerequisites, tutorials, challenges, and resources. text B is an unordered list of capabilities. Both passes agree A wins.
A wins clearly 5 – 0
▾ 2 evidences
Structure
text A has a clear, logical structure with sections for prerequisites, tutorials, challenges, and resources. text B is an unordered list of capabilities. Both passes agree A wins.
▾ 2 evidences
Conciseness
text A is verbose with detailed descriptions. text B is extremely concise. Pass-1 gave slight loss, pass-2 gave clear loss; the consolidated verdict favors clear loss due to the stark difference in length.
B wins clearly 0 – 3.3
▾ 3 evidences
Conciseness
text A is verbose with detailed descriptions. text B is extremely concise. Pass-1 gave slight loss, pass-2 gave clear loss; the consolidated verdict favors clear loss due to the stark difference in length.
▾ 3 evidences
Context
Depth
text A covers many topics in depth with explanations. text B only lists surface-level capabilities. Both passes agree A wins clearly.
A wins clearly 5 – 0
▾ 8 evidences
Depth
text A covers many topics in depth with explanations. text B only lists surface-level capabilities. Both passes agree A wins clearly.
▾ 8 evidences
Freshness
Both texts cover timeless JavaScript fundamentals. No time-sensitive information.
N/A
Freshness
Both texts cover timeless JavaScript fundamentals. No time-sensitive information.
Epistemic Honesty
text A is honest about JavaScript's complexity and sets clear expectations. text B makes absolute claims without qualification. Pass-1 gave A clear win, pass-2 gave TIE; consolidated verdict gives slight win to A.
A wins slightly 1.3 – 0.3
▾ 2 evidences
Epistemic Honesty
text A is honest about JavaScript's complexity and sets clear expectations. text B makes absolute claims without qualification. Pass-1 gave A clear win, pass-2 gave TIE; consolidated verdict gives slight win to A.
▾ 2 evidences
match #rKbPymv · Jul 16, 2026 · scored under v1.0