And the publisher I proposed to is willing to marketing-test my game on their portal which will make the game on sale on App Store.

If it failed the test, I should go to another publisher.

I'm worried that this prevents plan B which is looking for another publisher.
Any experience with this?
Or do you know why my previous publisher had said so?

Thanks in advance.

SungW said:

Do you know why a game publisher dislikes reviewing a game that has once been on sale on App Store?

Publishers dislike considering outside games all the time. They are very resistant to risk. Everything is a risk.

SungW said:
I'm worried that this prevents plan B which is looking for another publisher.

Maybe. You can't know that. If your game is good enough, publishers will be interested. If you have an opportunity, consider its pros and cons based on what you can know, not on what you can't. Everything is a risk.