No, there are no tracking spreadsheets, at least none that I know of.
AFAIK, there are only 2 locations in the GTA - Brampton and Toronto so there aren't many locations to compare. Also, if you live in the GTA, you'll have to submit your application in one of these offices. You can't, for example, submit your application in the Quebec BLS office.
The processing times are kind of similar. For OCI, it is 2 weeks from submission to receive an acknowledgement and 3 weeks from acknowledgement for the OCI to be printed. Shipping and receiving it at home might take another 3 days. So, consider 6 weeks in total.
For surrender, it sometimes varies but usually takes 4 - 5 weeks from the date of submission but it could take up to 8 weeks.
To be on the safer side, do not make any plans for about 2 months after submission unless it is very urgent and unavoidable. Also, you can travel once you receive OCI and you do not have to wait for Surrender certificate. You can also have someone else collect your surrender certificate on your behalf if that gets delayed.