We're only talking about the story. Not the missions. I think people really need to try and distinguish the two.
What I dislike? Well, GTA IV missions are too easy and repetitive, with exception of 2 missions (The Snow Fall and Smackdown), I could beat the game only using Desert Eagle on missions that don't require you to use a sniper.
TBOGT by the other hand was perfect (besides the short story mode), there's a lot of difficult missions in that game that I've seen myself obligated to use all my arsenal and I was still failing the missions, like that mission where you must defend Tony inside Maisonette 9 from 875629619 Russians mobsters that was trying to kill both Luis and Tony.
Sadly for me, people are speaking that GTA V is even easier than GTA IV, I hope the online heists have the TBOGT difficulty level
For real SOL, he obviously did not read the thread title properly.
I would not say IV was easy anyway, at least when I first played it. It was not very hard, but it certainly was not easy, and that includes EFLC.