I have the exact opposite impression. The work CBS Digital did on TOS-R looked cartoony and extremely over lit, minus the matte work which was excellent. The NX-01 felt like a tangible object for most of the series until the budget was slashed for season four.
During the whole run the NX-01 felt like an intangible object that never held up to the physical models that were used in previous series. And that's where CBS really shone on TOS-R. The NCC-1701 looked like the physical NCC-1701.
As for Season 4 the Eden FX would've used the same CGI model of the NX that was used for Seasons 1-3.