funny you say that, when i bought my start last year i tried it out against a same spec american one, i didn't find it to be springier, but a bit darker and less classic strat, less open and hollow if you know what i mean, less vowelly.. it was also heavier. i liked the alder better
however my tele is ash (swamp ash i think) and its really grunty and aggressive, bit more raw sounding. liked it in that application
saying that, on the whole "classic strat sound" a lot of 50's atrats apparently were ash, they used whatever was handy