Board Thread:General Discussion/@comment-37352696-20181030161848/@comment-5104557-20181031034058

Base form or potential ratings? There aren't any in their base forms, essentially because having a 7 in every other stat means the character doesn't need a knowledge of fighting skills.

Just looking at the very short list of characters with 7 in Fighting Skills will answer your question. Overall, the Phoenix Force comes closest, with a base of 7 in everything but Fighting Skills, with a potential 7 in it. https://marvel.wikia.com/wiki/Category:Fighting_Ability_-_Master_of_all_forms_of_combat

As Wolverine has a base 7 in Fighting Skills, then Phoenix Wolverine would be expected to have a base 7 in all stats. (Yet he still died in Thor Vol 5 6)