Begin with what each page covers
Two pages may use similar words while describing different situations. Before comparing a statement, identify the deck type, the purpose of the example and any stated convention. A classroom inventory order does not establish a game's ranking order. Put these assumptions beside the statements so you can compare like with like.
Translate labels into a common vocabulary
One page may write QC while another says queen of clubs. If their notation keys agree, the labels describe the same printed card. Rewrite only the labels you can confidently map. An unexplained letter should remain an open question. This step prevents a change in notation from looking like a disagreement about the underlying information.
Locate the exact point of difference
Instead of writing that two pages are inconsistent, identify the two sentences and the condition under which they appear to conflict. Perhaps one page includes jokers in a total and the other counts only the four standard suits. That is a difference in what is being counted. If the scopes really match and the claims still differ, record the discrepancy without guessing which author is right.
Keep a small comparison record
Use four fields: source, statement, assumptions and unresolved question. Add the date you consulted each page because its wording may later change. Do not treat a newer publication date or a more polished layout as proof of accuracy. The useful result is a precise question that can be checked, not an automatic winner between the two sources.
Questions and answers
Does different wording mean a contradiction?
No. Different labels can express the same idea. Check definitions and scope before comparing claims.
Should I combine the two explanations?
Only when their assumptions are compatible. Otherwise keep them separate and describe the difference.
What if neither page explains a symbol?
Record the missing definition. Avoid assigning a meaning simply because it seems familiar.