I play negator over gouger in most cases...so yeah...not sure what to say there.
Needless to say though: the new card requires conditions to be met before being played effectively, which smacks of fail. You folks can delude yourselves and play it like this card is completely awesome, but when everything is said and done in order for this card to be effective you will need to be getting lucky on second turns or making specific plays on third turns. Whereas if you are running a negator or gouger, you are paying for the body you get specifically with no bullshit specific conditions needing to be met.
As far as I am concerned sui needs to be fairly consistent if only in its cards doing exactly what they are supposed to do all the time, despite drawbacks.
Please avoid bringing up Tomb Stalker too because Tomb Stalker's conditions are notably easier to meet and he typically is not usually equated with a spot that negator or gouger typically fill as far as I know. Tomb Stalker also doesn't require a specific type of card(discard) to be played in order to come down earlier in the game.