lol being as though your on xboxlive i would suggest you looking up chancewizard and playing a good number of matches. the turntablist also plays nu, and hes incredibly good with nu. he generally beats me more then i beat him. He also had a very rough run against chance wizards tager.
the reason why rachel has a tough time during magnatized pressure is because of the follow:
* Her normals are too short ranged and come out much to slow.
* rachel doesnt have good mobilty options like nu does, rachel back dash can be easyly
puninshed by 5d for a long untechable knockdown, from this point tager can super jump his away over and meet you for a j.d right on your tech. or if you tech roll a free command throw or 720.
* firing a lobelia grants and infavorable trade. or when i tried shooting out a lobelia+a it was just flat beat out by tagers shit.
* because we dont have dp's or moves of invincbility what so ever, things like 5d> sledge+b>5a>mix-up become very tough to get out of.
* rachel is alot more floaty then the other character in the game are, allowing atomic collider to get her much easyly. espically if your the type of player who tries to jump to get out of pressure.
* when magnatized about midscreen, tagers ground cannon move was beating alot of shit i was throwing out. espcially after about a little bit past midscreen, blocked spark bolt into that move.
* in order for rachel to be allowed to rush tager tager or zone him she needs pumpkin, when your constantly being pull back into normals that do alot of guard stun, and command throw set-ups your not given the space to get free to have a fighting chance.
*his strings, hes like this stomp which is a low(6b), then into a move where he lounges forward with two arms thats combos after it(6c), then 5d, which pulls you right back into him for some more shit.
* when magantized its very tough to get away, and rachel needs a knockdown or some space to get started again. if shes not given this then you wont be able to fight back unless your opponent becomes predictable or sloppy.
Granted almost every single tager until i ran into chance wizard did not know how to take advantage of magnatism.
Summary of things that were troublesome against tager:
*counter assult will reck you. it puts you right by his feet, allowing him to magnatize you.
* magnatized against a good player equals terror.
* 6c+plus wind on block only really nets him free meter for instant blocking it, and is unsafe. You can make it safe by jump cancel, however, while magantized this is stil unsafe expect to atleast be blocking afterward.
*j.d is hard to anti-air safer to use wind and lobelia when its obvious players are going to super jump and go for this.
* tager instant blocking can become very dangerous, 5b> anything else but jump cancel is a free 360 or 720
* 5b>j.2c can be backdash and then punished by tager
*tech roll can canceling into command throw is gay, but you can punish his command thorw attempt with j.2c
* tagers 5d, 6a, j.d, 2d are good tools that are stupid hard to interpupt when caught in the corner magnatized.
* tager's 5a beats your normals inside at close range, and 4b is an incredibly good space tool tager has that has very good recovery and out ranges alot of rachels normals.
* an instant blocked j.2c>5b or 2b> can be punished by 360 or 720> or a simple back dash works in his favor severely when done in the corner.
Tech trap set-ups that lead into 720/360*
* j.b>you block>he lands 720* or 360*.
* your knockdown by i his 3c(two hands trip you), he j.2c because you didnt immediatley tech, you tech to avoid further damage from j.2c. he 720* or 360*.
* He bursts you, while your magnatized. you tech immediatley. he atomic colliders you into an automatic 720 or 360 that you cant escape. i fell for this a few times an lost rounds i should have won because of this.
* Nu player fell for this one, tager is right by you on a knockdown, your magnatized. he command throws in place(whiffs), you tech roll the other way he command throws catching your tech away from the corner.
* obvious one that no one falls for, spark bolt he jumps you tech you get 720. not a good one but might as well list it.
*5a on block >720 or 360 when magnatized
* some low normal(2b) where he kicks you while ducking down, is a certain amount of plus on block that allow for a tick throw un magnatized.