Meh. DS2 has plenty of tools to handle enemy hordes too; shields, bows, magic, enemy-distracting consumables are common instead of rare (Yearn/alluring skulls vs blood cocktails), heavy armour with poise, etc.
Both games offer you tools to handle large hordes. But in Bloodborne the hordes are more common and usually way more numerous. Some of the chalice dungeons have insane hordes, and when you are in a cursed dungeon with almost no health and die in two hits, well...
Most of the thigs you mentioned are specific for builds, a pure melee won't have most of these choices (and poise is a joke on DS2), compared to BB which are inherent to the combat system.
And except for cursed layer 5 dungeons, they are very manageable in the base game, those are part of really hard optional content after all.
I mean, I just went to NG+ on DS2 and there's this part, before entering the gutter when you find 2 red enemies (one spamming magic user, the other a melee) in which as soon you go down you have like 3 of those dudes that goes all kamikaze and they explode, oh and you are on water. Nothing as bad in the base game on BB.
I'm trying to prep for Dark Souls 3 with a build (looking at level 100 but also 125). Mind if I run this build by you guys to see if it makes sense since most people in this thread are extremely knowledgable of Dark Souls and I've only played Bloodborne. I tried reading through a lot of new information that came out this week to help base my potential build. Of course the game isn't out yet so nothing is set in stone but seeing how the JP version releases before the NA version I wanted to get a head start on asking questions to avoid entering spoiler threads. I would like to play my first playthrough with the PVP build I would want to use just so I can really get to know the build in both PVE and PVP.
IMO is too soon.
We don't know what spells there are, how weapons scales, stat requirements, we don't know how luck fits yet for potential builds, not even mentioning the fact that the stats aren't even the same, etc...
If you want a PvP build as your first one, you should wait and see what people cooks up after the JP, because anything aside from that will just based on assumptions and previous experiences with the past games that won't necesarly translate on DS3.