Other than that the BB2 is a hybrid ADSL/VDSL router, no.
How do the router stats compare between them? If the same, BB2 must be faulty.
Wired or wireless connections?
1999: Freeserve 48K Dial-Up => 2005: Wanadoo 1 Meg BB => 2007: Orange 2 Meg BB => 2008: Orange 8 Meg LLU => 2010: Orange 16 Meg LLU => 2011: Orange 20 Meg WBC