Physics in Heroes 5...

Yes, everything is fine. It's like a fairy tale: whatever you want, you write it, and it comes true. For example, can you imagine a crowd of dragons (about 20) burning gargoyles (stone statues)? They'll burn themselves out faster than the stone gives way. It's all just imagery... If you don't like it, play Rome: Total War or IL-2 Sturmovik... it's more realistic... Maybe you should remember that out of all the units in the real world, only 5-7 actually exist?