They won't last that long, and tbh that's a good thing since it doesn't really help either one of them to be in a tag team. Sandow is a good personality by himself, and Rhodes needs to get back into the IC title picture.
Tyrion, btw, Rhodes will be the bitch of the duo. I think it's already established if you consider how poorly they've been pushing Rhodes lately. Sandow stands out more than Rhodes already (while solo), so it'd make less sense for him to take the losses (never been pinned) or end up taking the blame for failures. Rhodes' character has pretty much already been built to take punishment and get made fun of.
Not really, Sandow took like 20 chair shots on SD last week, Rhodes took one. They came out to Rhodes music this week and Rhodes got the pin. So far they've made Cody look like the bigger deal to be honest.
And hopefully they only take one loss, to Bryan and Kane at Hell in a Cell, and yes, Rhodes should take the pin, he gets pinned all the time so It'll hurt him less.