Not to mention that games like, say, Sacred or Dungeon Siege hardly need finishing to be evaluated properly.
Does this imply that testers who test D2 or DS assume that with any C-RPG that method of testing can be used because all C-RPGs are repetitive ?
No, but the sub-category of action games with RPG elements -- not counting them CRPGs here, so sorry -- rarely diverts from the click-click-click-kill-loot routine. Plot is generally not worthwhile, so there's no point in advancing it to the end. (Dungeon Siege, D2.) There's also the fact that some games are bug-ridden enough that finishing them will be extremely infuriating or nearly impossible. (ToEE, Sacred.)
Remember that DD was bug ridden. I have been playing Sacred daily and I am not bored with it yet.
DD didn't have a mass
of random quests that often are impossible to finish; DD didn't have a bugged main quest
that, without applying a cheat, is impossible to complete. I could finish the game without a patch or game-editing. All things considered, that earns a game a lot of points. There's something to be said for D2 and DS -- they're, at least, polished and don't play like a beta version.