The title VP definitely does not mean you get paid the same, and different roles within a bank have differing requirements for the title. Where for quants it usually means a few years' experience, in larger, more hierarchical teams such as tech or operations it may mean that you have been heading a group of a few people for a couple of years.
Your base as a quant will definitely not be the same as the more highly publicized IBD, nor will it necessarily be the same as the quant sitting next to you doing the same job at the same level of seniority (in terms of a corporate title).