Not at all, let me use my summary here as an example:
This says my posts are most liked by sam at 45, with yourself at 14. This doesn’t really match with my experience here, where you are a much more prolific user of the like button. 
To check, if I go to my Likes Received notification page, by hand I count:
zogstrip: 45 likes
sam: 14 likes
On my site, the summary page says a user has liked my posts 211 likes, whereas according to the user directory and that user’s own summary page, they’ve only given 136 likes total.