Some people seem to think it's a "grind" simply because leveling is slower than what they're used to, and what they're used to is the steady, effortless "ding!" drip-feed of 2011 Azeroth with full heirlooms. Obviously I don't agree.
Yes, it's a little slower. No, you won't have to grind mobs or otherwise scrape the plate for experience points. You will have to do some side quests in addition to the main storyline.
On PvP:
SW:TOR offers "standard MMO PvP," and that's precisely why it's not a very PvP-oriented game. In SW:TOR, just like in WoW and Rift, PvP is more of a side activity than a pervasive thing; gear-based progression dilutes the importance of skill; PvE concerns inevitably affect PvP balance; rolling a new class is a time-consuming process that affects players' ability to shape and adapt to the metagame...
EVE and Darkfall are PvP-oriented MMOs. PvP isn't confined to instances or designated zones, it happens anywhere at any time and it has a real impact on the game world: territories are won and lost, resources become plentiful or scarce.
DAoC and WAR were PvP-oriented MMOs. They introduced new systems for PvP that fit the "massively multiplayer" concept perfectly: RvR, keep sieges, etc.
Guild Wars was a PvP-oriented pseudo-MMO. This one took the "e-sports" route: jump right in on a PvP-only character, everyone is the same level with access to the same gear. Combat was also a bit more strategic than usual, with a lot of emphasis on movement & positioning (jukes/dodges, body blocking, high ground advantage).
That's the context for saying that SW:TOR isn't a PvP-oriented game. It's not an insult... it just isn't a PvP-oriented game. It's a story- and progression-oriented game.