^^^^ You have a 16V right?
The Williams wont do 60 in 2nd without a chip to raise the limiter. Thats why the 0-60 looks similar to the Valver. There are some reports of freak ones that do all sorts of speeds in each gear, but my first post is what youd find from a genuine factory-fresh Williams.
The actual ratios are the same from 1st to 4th on the 16V and Williams, but the Willy has a taller 5th gear (economy and psychological better top speed than 16V), plus a tougher box.