Take the time to review the link before asking redundant questions. Your questions are all explained, I had asked them initially too. Especially in Vancouver where you pay for bandwidth overage(with most business class providers).

Recovery is easier when it comes to individual file selection, there are no tapes to swap, you don't have to wait for verifications, you no longer have to worry about a forgotten tape rotation or failed tape etc. there is more to operational costs than simply your monthly line cost, this saves a lot of IT time and you never have to worry about a filed backup, data is appended each night and not fully backed up unless opted for.