Getting back to the OP's original questions...
The new question is, which ship survived? Since we don't even have a definitive list of all the 40 ships, that's kind of hard to say.
That's a good question, and the only logical answer is that Admiral Hanson was being literal when he said that 40 starships were being deployed to Wolf 359, and Admiral Satie was being literal when she stated that 39 ships were destroyed there. So one of the ships presumably survived, picked up all the escape pods, and then booked ass out of there before the Enterprise showed up, since Data couldn't pick up any life signs. Either that, or all of the escape pods had warp capability and left the system on their own, which is highly unlikely.2. Where did the escape pods of ships like the Saratoga do if the entire fleet was destroyed??
The new question is, which ship survived? Since we don't even have a definitive list of all the 40 ships, that's kind of hard to say.