Basicallly takes the same time.
I said it before and I'll say it again. The wait is not a wait for them to do some super long, painstakikng background check on you. It is a wait for the 5,000 people that have applications in line in front of you. So your application sits in a pile until they get to it and it takes approximately the same time to approve or disapprove. The hand-written number at the top of the approved application is the number where that application falls in order that day (14 means 14th app that examiner did that day). For example, one of my form 1's came back from Ashton last year with 14 on it, that means that Ashton did at least 14 apps that day, but it was likely more than that. Given that information, on that day, if your examiner was Ashton your approval/disapproval would've taken a maximum of 34 minutes (assuming that 14 is all he got done that day and he works an 8 hour workday).