A Citation ( slotation ) is a Jet and it barely cracks 380 kts
A BAE146 is a Jet, all be it with 5 APU's, and it just cracks about 400 to 420 kts( I stand to be corrected ) and takes weeks to get up there!! And is thus matched by the Q400, block to block.
The Q400 is not much slower, around 365 kts so damn close. And it climbs like a fart in a bath all the way up to FL250
Not all Jets do 520 kts like the mighty 744
