Well, yes it matters. Because those (Muta and AG) are fruits produced by the Tree,and excuse my feeble mind sir, I will hardly take "They suck" as a thoughtful argument.
All 4 Mzhabs of islam. All philosophies based on islam. Produced stagnant cultures. They produced the cultures 1400yrs ago, 100yrs ago, as well as today. Yet you are debating Mutazila & Ghazali. As if it matters.
What does the Quran offer? Jannah (ie Heaven).
Yes it does. It does offer Jannah. It offers the reward and punishment. It offers certain rules, and offer the framework on how to follow those rules. Unfortunately, the rules the koran imposed, did not work. If you want that religion because it maintains a decent, coherant stable society, for your kids and family. Then you are not leaving them a good framework.
As for Pascal's wager. Quite a cowardly wager. Being a comp sci myself, I would say this wager was my last obstacle that kept me a deist. I hope you will One day, see through that wager like I did. What's sad in my case, is that I came up with the wager, years before I knew Blaise Pascal came up with it, and that it is his wager.
You can accept the wager of course but I feel obliged to transfer to you my conclusion for that wager. The wager offers no excuse for my Catholic God. The wager might be satisfied by any other god. It can be satisfied by Baal, Akbar, Shaddad, Rahman, Zeus, Allat, Uzzat, Manat or any of the Thousands of baals that existed and exist. Then there are the Krishnas, the Zeus, the Thors. Worse. the wager can be satisfied, if the god himself, only wants people who will transcend religions. People who will finally become good humans without any consideration for heaven or hell.
In short, the wager is useless as in it does not offer the simple yes/no it purports to offer.