Lol no way. GL beats lex 6-4 definitely, am 5-5 then, kf definitely beats lex 6-4 too and lex definitely loses to flash 7-3. If you do better than 7-3 against a great flash lemme know
You have to actually justify those numbers, especially when you're going to go against conventional wisdom with your own numbers.
What does GL have that makes the matchup so much in his favor? What tool does Lex have that isn't useful or is nullified by something Green Lantern counters with it?Unlike your other numbers for him, I'm sure that many GL players would agree with you on this because their lack of Lex experience, but I honestly think this is 5-5. Both characters have all their tools in this matchup, all their strengths work as they should and all their weaknesses are as exploitable as usual.
As for Aquaman, his main strength is completely nullified and exploited by the main strength of Lex. He can't zone Lex from the majority of screen space, and can't play his usual footsies game.
Flash is bad, because he has many quick multi-hits, his J2, and it's hard for Lex to get out of his pressure: but a close mine is still a nightmare for Flash and it's what allows Lex to get momentum against him. 3-7 is definitely being overly pessimistic about what is generally agreed upon to be a 4-6 that is maybe even closer to 5-5.
You should probably defer to matchup numbers given by top level players. Even if you play Lex and feel like you know the matchup, you don't know it as well as they do. Personally the Deathstroke matchup is impossible for me- but I wouldn't go around saying it's 1-9 just because of my own inexperienced opinion.