King had a better word for both of them but it's no doubt that Kane will go down as a legend. Despite all that he's done, actually, what he hasn't done as well, will be remembered as even greater achievements.
Kane's major WWE accomplishments: 1x WWE champion (1 day), 1x WHC (MITB PPV-now).
Eliminating 11 men in 1 Royal Rumble, Runner-Up 2001 Royal Rumble, 9x Tag Team Champion, has a title of "Mr. Money In The Bank".
However, through all of those major accomplishments he had to previously put up with horrible gimmicks. Not only did he play a dentist but he had to play a fake character (Diesel) because the real counterpart had left for WCW.
Big Show, conversely, has seldom major accomplishments and easily forgotten achievements. Some major things I remember of his career: WHC match (lost) WM XXV, WM XXIV: lost to Floyd Mayweather, tag teamed with Undertaker & Kane on separate occasions and involved in the feud with Angle and Lesnar.