Yes, it's big loss for PTI but as EVM and Overseas Pakistanis would have been first time in upcoming crucial elections and all other parties objecting it means that on their loss (which is surety at the moment) will given them excuse not to accept results. So, if PTI want early election then it have to compromise on it and revert the bill if it form govt. again and then ensure that everything is ready and tested for next elections.
However, in next general election It needs to work hard to get bogus votes removed from list. Must form team of political workers and volunteers on every polling station to counter rigging and minimize polling day and post polling rigging. It's huge task on which PTI should start working as soon as elections are announced.