Installing a SSD may improve some of the gaming experience however it's not directly tied into FPS, from my experience the answer is no.
FPS is a performance of the video chipset whether discreet or integrated, the SSD only affects how an app interacts with it, such as loading the game initially, loading new maps/sections of the game, etc. FPS is influenced by your GPU's fill rate. When I say GPU, it'll also include factors like GPU memory bandwidth and access times as well.
Integrated graphics use system RAM in much the same way discreet GDDR memory works on the same card the GPU is on. GDDR on the card with the GPU will almost always outperform a setup that uses the system RAM which needs to go through the system bus, I/O hubs and such before it even gets to the GPU. The SSD you're referring to is not going to have faster access times than DDR3, which means your FPS won't improve as a result of switching to a SSD drive.
Bootcamp vs VM, bootcamp will likely be a more straight up experience for gaming however it's not entirely 100% like using an actual genuine PC with Windows 7. A Mac still requires the use of Bootcamp drivers which aren't always without issue due to lack of updates and such. Some games don't run well in a VM, etc.