You know, the thing about the “Gwen fell in love with Peter while Mary Jane fell in love with Spider-Man” quote…It doesn’t make any sense! Because Peter is Spider-Man, they’re the same person!
So what I like to think it really means is, “Gwen loved everything about Peter but what she loved the most was his kind nature and intelligence. Mary Jane loved everything about Peter but what she loved the most was his selfless nature and bravery.”
In other words, they both loved him the exact same amount, for slightly different reasons that had nothing to do with how powerful/famous Peter was and everything to do with what sort of people Gwen and MJ were.