How's he weak to breakaway? And how is he safe? His safest variant is Reborn which at least doesn't leave you highly negative right in somebody's face if you have defensive meter to spare. Searing Rage is unsafe as fuck. Every string leaves you at at least -8 up to -15 the specials are even worse. In addition to that none of the strings have alternate routes that could lead to a 50/50 guess, so once you know how to block him, you have him for a full combo punish on every dumb shit he tries.
The only thing he has going for him that makes him so incredibly strong is a sick footsie and whiff punishment game, amazing damage when he lands a hit and his f3 stagger mixups that setup counterhits and whiff punishes for said big damage.
I don't see the weakness to breakaway either. He can safely bait breakaway after a hellport launch with f3,11 or f3,21 leaving him at advantage for an oki situation, or he can choose to not let you breakaway at all and keep you on the ground with 250 dmg+ spear-only combo to close out rounds.
I wouldn't care if his amp tp would hit high, but I'd care a lot more about opinions, if they were at least informed by a portion of lab time.
I think the smartest way to fight him is to get right up in his grill because he lacks fasts mids (f3 is i13 and b1 is i14) where you can bully him. Another way to deal with f3,4 is to be close enough to not get hit at the tip where he can whiff punish your buttons after walking back from either f3 or f3,4 otherwise it's a guess, but you have to deal with this stagger shit from every character so you basically have make informed guesses and know the risk reward associated with stagger mixups in general.
Another one is just learn his strings:
You block f3 (against Searing Rage): You block high, then low
You block f4: You block high
You block anything else: You block low
The second hit of his strings is so negative that he can't stagger them and you should have time to either block the follow up or full combo punish him with a 1 starter, or at least d1/d3 and jail him.
Scorpion isn't even that strong, he's just one of the characters that have the luxury of actually having practical crushing blows. He's got a good portion of weaknesses and strengths and massive damage potential due to practical kbs.
A lot of other characters would be right up in his ballpark if they didn't have ridiculous crushing blow requirements and a few tweaks to some moves/variations.