There is a bank just like runescape, and you have your bags to carry gear and foodd with you ( a lot more slots than runescape).
If you die, you do not lose items, but your gear degrades, and you need to repair, like barrows armour.
The world its a lot bigger, 4 continents, with MANY zones on each, 1 zone alone its like the size of the f2p runescape map.
WOW PVP its pretty diferent than runescape, in runescape the guy with more gear and levels wins. here you can be undergeared and lower level, but you can still rape a geared higher level if you have skill.
Feel free to add my msn for any questions mate =)
cheers
Insanosky