Understanding DropCatching with a bot VS SnapNames/Dropcatch

Hi!

I've been learning as much as I can about domains and build a little bot to request a domain with dynadot, it requests the registration of a domain about 2 times per second, so I thought I had a pretty good shot at winning the domain.

I check at 11:31am, which is when I estimated it would drop, and SnapNames had won it.

I'm wondering, what difference does my single bot have against SnapNames and the likes? I know they have hundreds of registrars, and dropcatch has over a thousand, but is it just 1000 registrars firing to register in the same millisecond, and first come first served?

Is there any point to me using my own bot, or should I just use snapnames/BO service?

I appreciate your help, thanks!