It's not that simple.
A mate of mine bought a new lid for our trip to France a few years ago. I'd never heard of the make but it Fitted beautifully, looked good was cheap and had a 5* rating.
2 days in and I noticed 2 red marks on the top of his head (he's a baldy)
He said the helmet was now really uncomfortable.

I only ever wear an Arai now.
I recently went go-karting and used my old AGV which I previously thought was good.
I can't believe I manged to put up with it!

Comfort is my main priority. If you're distracted by a bad fit then you're gonna need every one of those 5 stars.