"I have trouble reasoning and coming up with an answer for the same price tag between physical copy of a game and a digital one."
Because if companies sell the item for the same price digitally as they do physically, they make a few extra bucks.
"And why does the price of games tend to stay higher in digital form for longer than physical form?"
Many times, price cuts are due to excessive inventory which is not an issue with digital. I'm sure Amazon has plenty of copies of MW3 that are just taking up space, and they need to unload them. Not an issue on XBL. When it comes to physical stores, you often have stores offering sales to drive customers to their stores, which is another reason for lowering prices.







