WingedPixel
Winged Pixel
What really matters is how you prepare your campaign (work on generating interest long before the actual campaign starts) and how active you are on forums like this, indie websites, etc. Actually, you already seem to be doing that, so don't be afraid of using the smaller platform.
The platform IMO is almost irrelevant to the success of a campaign. It's not like people are browsing Kickstarter like mad in search of games that may come out in some years. No, they read about it somewhere, from friends, Facebook, etc. All of that is far more important than the brand that hosts the campaign
I've also heard from fellow games devs is that doing a crowdfunding campaign is a fulltime job. I'd rather wait until I had generated more interest before investing that amount of time in funding.