Better is all about perspective. Depends on what you will use this computer for and at what prices you can get them. For example in a notebook I would like the A4, but for a PC i would rather take the Pentium.
A4-5300 : Has generally better integrated graphics than most I3s. Uses less power.
Pentium : Faster CPU.(x86 processing) Will game better than the A4 if you add a graphics card like the HD7750.
Let me ask you what is your budget and what do you want this PC for?
If you are going to buy a discrete GPU, then go for the Pentium G630. It is much better.
If you aren't going to buy a discrete GPU, I'd recommend the A4-5300.