Quoted from jar155:

Run away from this thought. Guardians is decent on its best days while Spider-Man is one of Stern's best.
Spider-Man also has a depth to its code that Guardians won't match. The code is bland as all get out on Guardians.
Once the new game shine wears off on GOTG, which took about 10 plays for me, you'll be wishing you either had your Spider-Man back or had rolled the money into a different game. Get more time on Guardians first. Really make sure you think it will hold your interest in the long run.

Quoted from TwilightZone:

Played Guardians at Pinfest. I think it's still too early to say if it will be a great game. Iron Maiden seems to be getting the love. You never know with Stern. Updates may be slow or final code may not be great with Guardians. They may focus their efforts on Iron Maiden.
Spiderman is awesome now. Buy it, enjoy it and sell it later, if you want, to get Guardians when the code is done.

Quoted from HoakyPoaky:

Spider-Man a 1000 times over. All time classic. Pass on GOTG, for many of the reasons already mentioned above. The voice actors are especially grating to me.
If you enjoy the layout of GOTG, you'd be better off getting a Metallica or Iron Man. GOTG is a mishmash of both games. Either game is superior IMO.

Quoted from jar155:

Excellent is a major stretch. There's one on location a few minutes drive away from me. I check on it after updates. It's passable. It's no longer awful, but it's still just in the mid-tier range for Stern titles, especially compared to other recent releases. Spider-Man has some stellar code and the layout is superior. In a direct comparison, Guardians really only wins out in art.

Quoted from jar155:

Haha, why? Who says you have to own a game to know it well? That's the most ridiculous assumption you can make.

Quoted from Trekkie1978:

Excellent being a stretch?
1 - Code isn't 100% finished yet.
2 - People have a lot of FUN playing the game. All reviews of people who have played it, is that they have a blast playing.
3 - People is suppose to be fun. If people have fun or a blast playing the game, then the machine did exactly what it was designed to do.
You should really lighten up on the negativity. Your constantly repeated negative opinions carry no more weight than others.

Quoted from jar155:

I'm not constantly negative. I don't like GOTG much, and a lot of others don't either. Imagine that, some people don't like what you do like and vice versa. Crazy world we live in. This is a thread comparing two games, so you are expected to pick a winner here. Spider-Man is a better game, that doesn't mean you have to white knight Guardians. As much as you want to bristle at a negative opinion, you should allow people to have them. Find some chill. Spider-Man is ranked #15 on the top 100. Guardians is #160. It's fair to prefer Spider-Man over Guardians.

I've played it a lot. I've put a lot of money into it. We play it in our league a lot. It was in our SCS. It's seen very, very often in our events. My buddy is the one that owns it, and I often get a bunch of free credits on it. Don't assume, it makes you look stupid. I like pinball and I have an interest in anything that changes with games when code comes out. I also have to see these things in competitions and events, so I try to learn them as well as I can.