I think we all agree runners have an advantage in higher-level play. There's a lot of evidence to back this up.
The question I'm raising is if it's an issue worth caring about. If so, why? I'm interested in hearing people's reasoning.
Yes it matters. Mainly because, if you play against another skilled player frequently, and the two of you both win 75-80% of the time as runner, then it feels pretty bad to play corp. Also, it can be hard to test runner cards. You take any good runner deck, you change it some, and it doesnt matter because you stomp the opponent no matter what.
For example, I'll talk to asroybal, and he will be like: I really like Gabe now! I like runner cards X and Y too!
And I'm like: Yeah, I'm sure you win tons with those cards. And you would have won tons with Andromeda, or with any other card in those slots as well, because its runner. So it doesn't matter, you just win easily.
Andromeda is good, Gabe is good, Kate with Atman/Suckers is good, etc. Meanwhile over here, the poor corp is just trying to win a game. Even games that start out really promising tend to turn into close games and often losses, even when the corp gets good defenses going. The runner just manages to get enough stuff out, hit your R&D for three cards, and agendas appear.