You aren't drilling info into me as I mained Kasumi in DOA5 so I am speaking from a year of experience as well as what I see in high level play. And it is good that you are debating because it educates people that dont know about the matchup. Moving on have you seen high level play of Kasumi? All of the moves you are mentioning are moves that are avoided for clear reasons. And you are only talking about one part of the match. Most of the moves you mentioned that are low crushes are not instant low crushes and put her into a poor situation on block.
PPKK - This is never going to be used in a fight in high level play unless you want to take throw punishment. The low in the string isn't worth that risk because she has much better strings she should be using to pressure somebody.
9P - 9P flip by itself to get in is not a good idea. It can clearly be seen whether she does the high kick or not so she is not surprising anybody with this move.
9K - This is a good range poke but it leaves her at -12 on block. Her followups are an unsafe high elbow of an unsafe mid k. The mid K followup isn't worth going for as the damage she nets from it is worse than the damage an opponent gets from a 12 frame punish throw. The cancel isn't too difficult to notice as well. The delay on the followups is nowhere near the level of 3PP or 6PK delay. 3P and 6P being legitimate points to cancel a string.
Ein's footsies doesn't consist of only lows. When Ein is playing footsies he is hovering in and outside of 46P and 236P range. That is his ideal range. At that distance hoshinpo from Kasumi isn't ideal. She would be better off dashing in with string pressure or poking with 3K.
Ein's footsie tools are 236P, 46P, 236K, 2H+K, H+K, 4K, 1K, 3K, P+K and 6P+K in addition to universal spacing tactics. If I whiff a 1K outside of 236P / 46P range Kasumi has no response to that. If she tries to hoshinpo in she may end up taking whiff punishment from a 4K keepout attempt or If I decided to followup into 1K6P / 1KP get stunned. If she decides to bulldoze me without thinking she may end up taking CH 3K, 4K, 46P, or H+K. Kasumi literally has nothing any player should be afraid of at range. This does not mean she is bad at footsies or spacing. She's alright at it but against characters like Ayane and Ein who control the screen easily she's got nothing. She has no choice but to respect them at distance or bulldoze which doesn't end in her favor.
Kasumi simply shifts the focus of Ein's 2P pressure. Instead of focusing on scoring counter hits, Ein will try to keep Kasumi on lock with jab, crush with 2P, or make a read on her with defensive holds and SS. Use of his mid following 2P should be kept to a minimum so he doesn't get counter blown too often by her mids or jabs. These are really the only options Ein has because Kasumi's speed allows her to dictate the fight in close quarters. He should not even be trying to interupt her strings often. SS or hold them. Then when you get a juggle use the knockback to keep distance. If she is cornered use the wall to your advantage. Her options at the wall are oboro GB or trying to interrupt Ein which isn't hard.
Like I said they both dominate the match at different points so I lean more toward 5-5 but 6-4 is not inaccurate either because when Kasumi gets in close range Ein has some difficulty getting her off of him due to his lack of crushes and speed. You were just making it sound like Kasumi limits Ein at range which is what I'm disputing. If you want a character that limits Ein at range those characters are Ayane, Hayate and possibly Lisa as well. Christie may also give him some problems.
I can't comment on Zack because I don't have MU experience vs Zack. Rachel I'm almost inclined to agree with that number but I am also inexperienced as a player. Once I learn the characters options and get better with Ein I will have better numbers. In general though the standard for Ein having a disadvantage matchup is if anything the opponent has limits the effectiveness of his spacing / footsies as well as his 2P pressure because those are literally all he has.
