Each excels at certain facets of the game over the other.
I was (and guess I still am) a big Loui fan. Even though he was the center piece coming back in a pretty terrible trade for the Bruins, I always liked his game in Dallas, and felt he was unfairly critiqued in Boston at times.
He put up good to great numbers in his 2 full seasons with Boston, and seemed like a solid teammate.
However, I would still rather have Backes right now. I feel (hope?) he really injects some life into this team. Tall order to fill for a new guy. However, by all accounts he's the right guy for the job. He's versatile in the fact he is comfortable at center and wing. He's defensively responsible, and can score a few goals. If he brings the same game he had in St. Louis to Boston- fans here will fall in love with him.
I am also on board with the contract concerns. If I have to take a chance on one of those guys as they go into their twilight years, I'll take my chances with Backes. Erikkson will do fine in Vancouver, and I wish him nothing but the best of luck. However, I am super excited to see Backes in black and gold next year.