Yep. There's not really much of a chance of both bids arriving truly simultaneously for all the reasons above, and even if both bids hit ebay's network at the same time the database transactions that actually "are" the bids themselves (the bid packets are orders to initiate those database transactions) would not be completed at the same time. So if three bids for the same amount shared the same bid order time-stamp then the bid transactions processed by the database back end subsequent to the first would be rejected for not meeting the minimum increment.