Diverse weapons? By that you mean Halberd until you get Ludwigs to faceroll through the rest of the game, right? Bloodborne had many interesting things about it that appealed to certain crowds, but weapon diversity was not one of them.
Anyhow, after three runs through DS3, I went back and did a pure sorcery run of DS2. I even bonfire boosted the spider boss to get the MLGS, which while not as freakishly ridiculous as in DS1 and DS3 was still pretty amazing (I got bored of the Dragonslayer Spear pretty early). The Ivory King was the hardest thing to complete, due to the guy having outrageously high resists in every area, but I was able to do the entire game with occasional NPC phantom help in about a week. I still think DS2 was better, partly due to the frame rate advantage and more elaborate zones / diverse enemies compared to DS3 (comparing just base game here) and the armored boss guy spam really only starts up massively in the DLC. The Umbral covenant boss was probably my favorite one from the base game and the poison dragon in the first DLC area is my favorite overall. The two areas that DS3 have DS2 beaten out are Nameless King and easy vendor access. There were two zones that had fun exploratory layouts in DS3, but they were really early in the game and the entire thing suffered from a lot of linearity, overall.