Its only theory, because any time any day, developer of this coin can say one thing, that will drive price x2 or /2.
Its not easy like that, its so much more to it.
OP is only asking if there is an intrinsic value given to a coin comparing it to one with a higher supply and equivalent market cap. We all know there is multitude of factors driving the price.
Exactly. The number of coins in circulation can, but don't have to influence the price. That is unless you go into extremes and start making the supply unlimited or something, then I'd expect the coin to plummet.
It really doesn't matter if you buy 100 coins for $1 each or 1 coin for $100. You can find coins of both types that have gained popularity among investors.