Again, my impressions of Blue Dragon are somewhat biased, but ANY review of the game will be - BD has gotten scores of 5.0 to 9.5 to prove it.
There is no real way to score it without a bias. On one hand, I can see how some could judge the game "stale" since it's gameplay is almost entirely derived from mid-90s JRPGs.
So on one hand, if your a lover of mid 90s turn based RPGs like Lufia, Final Fantasy (SNES and early PS days), Dragon Quest, and such, your going to give the game a very high score. However, if your opinion is soured on the fact that JRPGs haven't changed much, you won't like the game.
A very simple way to put it would be:
Pros:
+ Graphics are beyond beautiful. Near flawless. Areas are expansive, visually stunning, characters are well-textured and good animations.
+ Battle system is elementary, but much better than older JRPGs. No random battles, the encounter ring adds alot of tactical depth and much-needed quickness to battle resolving.
+ Shadow Classes are very well balanced, and designed to multi-task your character's shadows in very good depth/balance (to your chosing).
+ Really really long (60hrs+), and the Achievements are ungodly hard (I'm at 5/1000 and have played for 10hrs).
+ Game is rather easy on Normal Mode (I'm litterally walking through it beating most enemies in 1-2 turns), but very challenging on hard.
+ Soundtrack is one of Nobou Uematsu's best (if your a fan of his older work).
Cons:
- Some very minor (far less than the demo) screen tearing and frame drops during some animations in battle
- English voice acting is pretty bad for Maru and Shu (but meant to be)
- Story is basic JRPG fare - unknowing hero saves the world. Big whoop.
- Rather linear in the beginning, but I can certainly tell it gets better later on.
Again, in a conclusion: the demo was not indicating of the game very well, aside from graphics, and real basic gameplay. If you are tired of JRPGs being the same, just give it a quick rent. However, if you love JRPGs like I do (I've beaten probably near 50 since the early 90s), you'll rate BD very well, as it ranks up there with Final Fantasies and Dragon Quests.
I'm trying to beat this, and Two Worlds before Eternal Sonata comes out - I'm not doing a good job.
In the end, the major issue I have with the average score (77%) is that it's vastly too low.
Look at the X360 JRPGs thus far on GameRankings:
Eternal Sonata: 78.9%
Blue Dragon: 76.8%
Enchanted Arms: 70.9%
Phantasy Star Universe: 65.4%
The disturbing thing is that ES and BD do not deserve to be anywhere near ES and PSU on rankings. It's like trying to group Pokemon and Tecmo's Secret of the Stars in the same catagory. BD is not a small margin better than EM. It's vastly superior (I gave EM a 7.5 overall on my review. Blue Dragon, to me is around a 8.75).
Don't believe reviews, they are biased against traditional RPGs beyond belief. Every Japanese review of BD has had BD vastly higher than Eternal Sonata, but the US reviewers are buying into higher ES reviews (not that ES doesn't deserve good reviews) is because of the battle system, and not much else.