people with samsung experiences should know that their phones and tablets systems become slower and slower overtime because their software writing skills is not up to the level yet resulting performance degrading overtime. I guess this is why they need the 8 cores because they are having difficulty optimizing the 2 or 4 cores. The only thing they could come up with is to release the 8 cores to compete with 2 and 4 cores made and utilized by other brands, and yet samsung still barely wins in performance but a close tie. This is exactly like brute force vs brain.
The performance degration from samsung devices sadly can't be fixed because their after sales support is the worst in the industry. Not only that, the patch didn't even fix the problem. The only thing that's changed is the version number, sad but true. Doesnt matter how many cores they have, this issue still remains.