I'd say it's equal. Nothing physical has significantly changed in the time period our species has really come into being, within 10,000-12,000 years. So it depends on what you mean by 'intelligence'. We've obtained more knowledge, that's obvious, because we have the benefit of having built upon centuries of progress.
I think most people today don't give our ancestors enough credit. Think about it, fire. Just one example. Imagine the life a person was living before there was fire compared to the one after. Fire was one of the biggest advancements in all of human history, if not the biggest. The wheel, agriculture, domestication of animals, cities, political systems, religions, weapons. One thing I think is particularly remarkable is our earlier findings in astronomy, having nothing but fucking mathematics to prove theories. That's absolutely amazing to me, somebody could come up with something that there is no way to currently physically verify, then 100 years later somebody invents a tool and tests the numbers and instantly in that moment 100 years of progress is added to the history books and every human being to come after that can point to the moment in time when scientific justice was finally served! Shit gives me chills sometimes.
I do think ancient people were much more efficient and their personal relationships were probably much more meaningful to them than they are to us. They probably had vast knowledge of their environment, what plants could be used for what types of medicines, excellent hunters, excellent builders, great role models, etc. Most of them lived in tribe type nomadic societies where being a stand up guy paid off and being a dead beat affected your social status and brought shame to yourself. Today, none of that shit matters at all, the only thing that really matters is how much money someone has, it doesn't even really matter how you get it either, be it legally or illegally. It's socially unacceptable to even ask in most cases..
I got stoned in the middle of that, so it probably sounds a little different... lol
First time in a few days too, so damn I'm gone!
..so I'll just leave it at that.. lol