There is massaging speed figures on a forum which isnt exactly unusual as alot of people do it and then there is claiming sprint  speeds that are comparable to what the fastest riders in the world  achieve on sprint finishes with lead out trains. It is faster than the  speeds reached by the best sprinters in the world doing the kilo and  comparable to what they can manage in a flying 200m. These speeds would be  in a velodrome with a faster surface than road, skin suits, track bikes, aero  helmets, aero wheels and no wind  by guys that are specialist sprinters  who put in very specific training to get to these speeds.
It is nothing personal - if Mark Cavendish, Tyler Farrar or Thor Hushovd were claiming to be able to match them in a solo sprint i'd be calling BS too!