Actually it says 2 seconds slower.
I can attest to the fact that they are indeed greased weasel shit at boot times and in normal operation. You'd have a point if the cacheing algorithm were as dumb as fuck, but it isn't. Frequently accessed stuff stays cached and writing or reading a shedload from less frequently accessed files makes no difference, that goes straight to and from the rotating rust.
I've been running a 500Gb Momentus XT in this 'ere laptop for a year now, it's bloody quick and feels just like having an SSD, only bigger and a bloody sight cheaper. Takes a week or two for the cacheing algorithm to get used to what you do, but once it has its feet under the table it really flies. The slower access to big data makes no odds, as the main limitation there is not access time anyway.
The big plus for enterprise use is that they don't need defragmenting, it slows 'em down as it knackers the cacheing and you're back to square one on performance. Thus in an environment where the users are locked down and cannot run defrags themselves, it saves support effort defragging sclerotic machines.
For desktop or laptop drives, these things have the win on price/performance right now in spades and if you want capacity, space and speed, they're the only game in town unless you are King Croesus.