The key point here is that SAV10 clients can take a daily update for maybe 10 maximum (I'd have to check, but it may be less than that now). Wheras a SEP client can take deltas from its management server for as long as you need, dependent on having the right amount of storage on the SEPM.
The SAV limit is hardcoded, as we supply deltas to the server for distribution.. With SEP, the server builds the deltas itself, so you have more flexibility.