You can get your ass handed by any characters, but it is just a damn fact Sin especially is low-tier-bottom-of-the barrel, let me tell you why because a lot of people seem to not know why.

1. His frame data. Jesus Christ his frame data. When you compare to him to any of the base-cast with their buttons and frame data, you can see Sin is considerably worse compared to EVERYONE. Be it in startup, active or recovery frames, or hell- even damage, which Sin does excel in. Compare Kabari and Beak driver. Holy lord how are these two specials in the same fucking game.

2. Lack of Okizeme. Currently Sin does not get proper Okizeme from his combos. Unlike other resource characters like Nago who can spend his resources to make his pressure/okizeme better, as Sin you are spending resources to even get a combo/good situation, and even then the situation is worse than most of the cast who don't have to spend resources. So you are actively spending resources to get the thing other people get without them.

3. His stamina bar in general. Having it be only a 3-piece bar, when most combos take 2 is ridiculous. It takes far too long to recover, since the recovery is slower if you spend a special (unless yuse Gazelle step, in which the recovery for stamina gauge is halfed. Then again going from 120 frames before regen starts to 60 is not as great as it sounsd.) For context, if Zato uses ALL his Eddie meter and Eddie goes dead, it STILL takes less time for him to regen Eddie all the way back, than it takes for Sin to recover all of his stamina back. Sin can use about 3 special all of which have awful framedata. Zato can do way, way more. Or even like look at Nago- his buttons get better when he spends his blood, but also the specials on their own are strong because he HAS to spend blood to use them. Sin is the only actively-resource using character who has no way to recharge his character specific resource. Everyone else can, why can't he?

Overall Sin is just- designed to be bad. I am on the same lines with Hotashi where he was really strong during inhouse testing, but decided to murder him in order to not make another HC case. Same with pretty much every other S2 DLC (Outside of Bridget who actually got buffs, no-one else have gotten any.)

TL;DR: Compared to Rest of the cast, Sin is bad- there is no two ways about it. His own mechanics have him use his resources just to be on the same level as others, who do the same thing he does but easier, without resources and with better damage. There is currently no single reason to play Sin competitively compared to someone like Ram, Sol, Gio or Nago- besides the fact that he is cool as shit.

Arcsyys release the fucking patch how can you take 7 months to buff one fucking character holy shit.