Lol sorry for all the questions, after playing WoW, EQ2 is very new to me in many respects. It seems a bit harder to solo. Although, just because WoW claims to be solo friendly, doesn't mean that the questlines and such have great solo support.
EQ2 is in general a more difficult game to play (than WoW) because WoW is like MMO lite. Everything in it is simplified so that anyone - gamer or non-gamer alike - can understand the concepts and succeed.
You won't find the kind of "pat hands" in EQ12 that you do in WoW - meaning that you won't find situations like ideal character builds - there are instead always many ways to skin any given cat...
Because of this, the game will often seem harder to play or understand. The trade off is that you will also find it more satisfying and rewarding. When you have built a character up to level cap from scratch you'll have the satisfaction of knowing that your character is unique and distinct - not a cookie cutter copy of every other character of that class on the server...
Remember that in EQ2, character classes are VERY WELL balanced so everything is a trade off... A class that can dish out massive damage will have a weakness somewhere else (like being required to wear tissue paper for armor). And a class that seems to be a "jack of all trades" will truly be a "master of none"!
This was done intentionally by the designers so that there would never be a single class that players would feel "required" to play in order to be the "best" and also so that there would not be a class that no one would want to play (or group with) because of a overall weakness.
If a class you are looking at (or experimenting with) doesn't seem to have a strong point, you just haven't found it yet!
Plate healers are a perfect example... while it's true that they don't hit well (making them seem weak as solo characters) they are extremely survivable and are also the strongest healers in the game and as such, are always in high demand for raids and groups.
On the other hand, tank hybrids like monks and zerkers tend to hit harder than other tanks - and may even hit harder than some DPS classes but as a trade off they will be less survivable and will really need
a healer in more small group situations.