The feeling while playing each game was as follows:
FS1 = "oh shit, we're getting slaughtered by the dozen by a clearly superior foe in unknown numbers"
FS2 = "Well, we're more or less on equal footing as the shivans, no big deal."
Yea, they were ovepowering in FS2, but it didnt feel like it. FS1 was a lot more of a 'fly by the seat of your pants, pray to god sol survives' type game than fs2 could be. And all the fancy eye candy and effecs and nebulas didnt change that at all. (In fact, the blackness of space being so pronounced in FS1 I think led to an even drearier atmosphere.)
The FSPort, admirable as it is, simply cannot and does not match the atmosphere that the original game still has.