The Mk3 is by no means slow nor does it feel heavy.
I think people look at 1*2s with rose-tinted specs to be honest. Yes they're great cars, no doubt about that at all. But a 197/200 is a different car altogether, they're a lot more composed than the 1*2 which can perhaps make them "feel" slower but in reality they're really not. They are heavier yes, but the jump in power negates the extra weight.
Likewise, the 133 feels rapid because it's so rorty and little but it's not really a "hot" hatch by any stretch. It's warm certainly, just like the Suzuki Swift Sport is. But it's nowhere near the category of the 197/200 and Type-R etc.. Much like they're a step down from the 225 and Focus RS.
Perspective, the "feeling" of speed, can confuse the senses...