Of course, Java users have more possibilities for games due to the great number of game engines available but it's also true for classic apps: Java users have more libraries, more examples, bigger forums, etc., at their disposal. B4A offers less in many areas, but it offers something different and that's this difference that B4A users need and expect.
Unity is very popular indeed, but mostly for 3D games, and a lot of famous games for Android are not made with it (libGDX, Cocos2D or AndEngine are also very popular engines). Among the most downloaded games (Angry Birds, Temple Run, Fruit Ninja, Candy Crush, Subway Surfers), only Temple Run was made with Unity.
In a B4A forum, where most people have no skill in Java, I wonder what's the reason for promoting Unity. You want to wrap their SDK for B4A? Good news
!). I wouldn't have bought B4A if it was not awesome. I was just pointing out that Unity3D is very easy to use and now free for Android , iOS and windows phone 8 build too - so those interested can build games with Unity too. Games in unity can be made with c#, java or boo. All are easy to understand. Angry birds all latest versions are made with Unity 3d. There is no need to port anything to B4A as unity is as easy as B4A (This hides the fact that I don't know how to port ). Lastly, Unity is a huge firm- it doesn't need promoting. Microsoft is giving it tons of money for making Unity compatible with Windows Phone 8 .
I did not want to say that Unity is not a great piece of software. It is. But it's wrong to say that every popular games are made with it (it's a marketing speech, not a fact, and AFAIK Rovio only used it for Bad Piggies); it's wrong to say that B4A is better for apps than games (or I made a big mistake by choosing B4A and libGDX for my current game) and your post has a very thin relation with the thread (as mine, I agree). That's why I reacted. And FYI, Unity is free since more than a year. Not very new.I am in no way belittling B4A (just learned this shortcut for Basic4Android