FS1 made my hair stand on end
. FS2, sometimes (DIVE!...). I think what some people are noticing is the sense of utter vulnerability felt with FS1. You get shields, great, the Lucy has impenetrable shields. You get better fighters, but you feel like you're in a MiG 21 vs an F-15 most of the time. You get the sensation of a bug being played with by a mean school kid that is stomping the ground, not squishing his prey just yet; he wants to play first. The ending kind of hangs by a thread.
Now, in FS2, you have the big C... which evens things out a bit. Your fighters don't suck quite as much (except for the Herc2, unfortunately), and you feel that, with a lot of effort, you might just turn the tide of this war. The Knossos brings a sense of awe and wondering, but when the Shivans come in, you pretty much think "Oh, great, now the C has something to shoot".
When you see the Sathanas, you realize that the Shivans are extremely powerful, and this isn't going to be easy; you get a bit scared. Then, when you find out there are 80 of them, you start getting the FS1 atmosphere, but it is quickly replaced by confusion as the fleet just sits at Cappella, surrounding the sun, which is still worrying. At the end, you're kind of struck with the Shivan's huge technical superiority and strength, but so many more questions are raised, and almost none answered. You don't have time to develop the horror that you sense in FS1. If it had taken longer for the Sath fleet to arrive, then maybe...