Refusal is a stall because the city doesn't have enough resources to deal with it. The zoning doesn't have specific heights limitations - and there are plenty of tall buildings around or approved to justify the request. Sending it to the board may give the city more time to deal with the application and/or at least negotiate with the developer. It would be difficult to say this is too tall given what was approved for Mirvish/Gehry & others nearby. I think the planning department is simply overtaxed - we are dealing with a great deal of projects (more than almost any other city in North America) and our politicians have been cutting city budgets for years. I really don't know how they actually do deal wilt all the applications they do.