It's not the odd/odd or even/even combination you have to avoid. You want to avoid combinations of CS/rear sprockets that result in a ratio that is an integer (whole number), e.g. 15/45, 14/42, 17/34, etc., etc.. The reasoning you were given is correct, if the ratio is an integer, the same link will hit a front tooth and the same 2 or 3 teeth in the rear every revolution. This could accelerate the wear of the teeth that come in contact with a link that is having an issue. The thing to remember is that it wont prevent the wear if you have a bad link/chain, but it will prevent one specific link from wearing unevenly compared to the rest.
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.