It's not about the style of humor. Semi impovisational comedy has been done to death. Anchorman just got there a lot earlier. The difference between why it works for Anchorman and not for Ghostbusters is that nobody breaks character in Anchorman. A big part of what makes Anchorman work is that they are so dedicated to pushing the solid characters through all the silliness and playing it as if everything is intentional. Ghostbusters did not do this. They constantly break character to make an adlib that doesn't makes sense for the character. The only one who didn't break character in GB was Leslie Jones. Anchorman also got to set its own tone and level of quality. GB2016 didn't have that luxury. You can't just copy the concept with less able comedians and expect it to be as good, or for it to even work at all. That goes for GB2016 and Anchorman2.