Didn't read the entire thread, but this is my take on it. Any girl who is average to above average in looks is going to have a plethora of guys that are interested in her. If I had to guess, like 90% of them will only "game" her through texting, which isn't necessarily bad, but I will explain why calling can sometimes be better.
For one, it pulls you away from the pack. What better way to stand out by having the confidence to call her and have a real conversation (And I mean the term loosely, I know actual real in-life interaction is better, but specifically in terms of texting vs calling). If you call later at night too, you get the added bonus of her probably thinking about you when she goes to bed.
It's just that a lot of guys don't know *how* to talk on the phone. For one, they think longer conversations are better. In fact, it's better to end a conversation early if you reach a high point, rather than dragging it out and ending it after it gets boring. The minute you two actually start to click and have a fun conversation is when you make an excuse to get off the phone. It'll imprint her with a better impression of you, and it'll leave her wanting more.
Are there uses to texting? Definitely. But don't make it your crutch.