Errors in sample number on the comment card are not uncommon.
When there is time, the best Reps will go through all the comment cards to make sure they match up with the actual scores for that team. At the comp last weekend we had several that didn't match up, and the Reps discard them to eliminate confusion.
When there is not time before awards to audit all the comment cards, it is possible a cook will receive one that was meant for another team but the judge wrote down the wrong number. If that happens, just ignore it and toss it as the comment was not about your entry.