The numbers the company use to describe the frame size are not standardized, so any chart or guide that makes a general statements that "a person of X height needs a frame of Xcm" is meaningless. It cannot take into account the differences in frame design between manufacturers and models, or the fit preferences or flexability or expectations of the rider.

Since you are 6'2" I would assume you want the L or XL of any brand. However, the L or XL of any bike may or may not be a good fit for you.
There are three ways I can think of to tell if a bike is a good fit for you:

Get measured by a competent shop that does professional fittings (this can get you in the ballpark, adjustments might be necessary after you start riding)
Compare it to a previously owned bike that you know is a good fit
Ride the bike and make necessary adjustments (if you need to buy super long seatpost or weird stem to get it comfortable it may be the wrong size)

What constitutes a good fit? If you ride the bike on the rides you want to do (terrain and distance) and you are comfortable, the bike fits.