The clocks on the Pentium are low yeah, but they stand up very well against the I5 etc. I guess it's at that point where "it's enough".
Thing is the clocks on the Ryzen will be pretty low too. Really hoping they actually go above 4ghz but if they don't there won't be an awful lot in it.
Digital Foundry did an article about the Pentium and compared it to the Pentium Anni. Like me they noticed that two cores just stuttered all of the time in demanding games, where as the Pentium was butter smooth. And this is one area of the market where you can actually get a decent priced Intel board too.
Mind you I will be honest, AMD no longer have to make all of their money from this sector, which is quite nice really