Internet speed/bandwidth

I used to work for a company that had 3 T-1 lines for 200 people at one office and now I work for a smaller company with 5 people and a DSL connection. My Internet performance is so much better at this location but doing different performance tests on the Internet gives me about the same results as I used to get at my other company.

Just because I am curious I was wondering if anyone can explain why I would be getting better performance here even though tests such as the one found at toast.net show them to be about equal. Routers and Internet connections are not my specialty but I am always wondering why things work like they do.

Thanks to anyone willing to give this a stab.