No, R65 and R70 are just different versions of the Checkpoint product. R65 is now obsolete (Went EOL in Nov 2011). In fact the current version of Checkpoint is R80 (went R65, R70, R71, R80).
The CCSA is the basic certificate which is mostly about day to day administration and the CCSE is the more advanced one which is more focused on troubleshooting and optimisation.
R65 & R70 aren't really worth bothering with now, current course are all about R75 which is all about the new(ish) blade architecture.