[jtr]

I believe the second table is based on simulation results in which it is not clear that the opponents are being modelled in a sensible way. The author built up his results largely from a "hot and cold equity" point of view. Whereas I believe the Sklansky table is based on experience plus logical consideration of how certain hands play out in typical games.

So if you must memorize a table I'd recommend the Sklansky one. The second table would be fine if you were playing a game in which you had to decide whether or not to go all-in preflop and that was your only betting decision. But real games aren't like that.