No. We have yet to see that there will be any benefit to the faster CPU or that N97 will be replete with out of memory issues. They did an API to contain that, presumably.
Which do you think is going to be more successful? The winner in the sales war will see more development. Xbox 360 is inferior to PS3 in just about every spec but it has long enjoyed an advantage in available games. I own both but prefer my PS3, but many multi-platformers are continually optimized for the inferior platform. Much can be synergized since they're on the same platform but where is Samsung going to be distributing it's software to? Nokia and Adobe are paying people to produce flash stuff for the Ovi store.... (similar to the way Microsoft outright purchased many exclusivities, even if they were only timed).
More memory is certainly always better. A change in CPU will need to be accounted for in the coding and optimization process. If the coders aren't up to speed on this, their code and execution will suffer. That's why the beginning of every gaming platform has games often barely distinguishable from their last generation descendent/competition, but at the tail end, they're really pushing the envelope.