The difference is that iPlay4e, if you no longer have a DDI subscription, no longer provides you with the information from the compendium (assuming the power is not in the free stuff that everyone has access to.) Masterplan allowed you to download the compendium data and then continue to access it, even after your subscription had ended.
It is a difference. The length of data storage and scope of data storage is not an aspect of the GSL. Anyway, people are getting upset about it. I made my point. Data storage is data storage. *shrug*
Heh, I know the license people recall the GSL topics at WOTC. Yes? Software issues is the long time complaint. So, I hope nobody gets sore about it. If the hundreds of posts throwing thousands of words in countless walls of text can't get WOTC to change the policy. There is no need to get upset over it.