RnRC stats

[tomm4004]

On the American Coaster Enthusiasts website, they list the stats for every coaster in the world. WDSP RnRC is length 3403ft, speed 57mph, height 80 ft.
For the RnRC at MGM they list length 3400ft, 60mph, height 90 ft. Do you think this is an error or are the stats different?

 

[TowerOfTerror]

According to Roller Coaster DataBase, the only difference is the time.

 

[Robfasto]

The highest point is from ground level, if the coaster goes below grade through a tunnel or something the the highest point is still from ground level.

That is why you see coasters that are 209ft high with a 225ft drop (Desperado in Primm, NV.