The graph Ritter linked is a comparison with the ICE-1 - but the ICE-1 is overweight and has only locomotives at the two ends. The ICE-3 with its distributed power reaches 300 km/h in a little over half the distance, the Spanish S103 and (from what I heard) the latest Shinkansen versions (the FASTECH and the N700) outdo even that. Admittedly, that's still two-three times the Transrapid's.

Another issue is something rather close to my field, ride quality - with the spread of air springs (lately combined with actuators) in railway construction, a stability beyond that of gliding on magnetic fields was reached. But building a suspension system into a maglev is rather challenging (i.e. a complete redesign).

_{*Lunatic*, n.
One whose delusions are out of fashion.}