The top 4 aren't the same as they were even a few years ago. Liverpool didn't have Torres, Arsenal had a younger Fabregas and no Arshavin etc. etc.
The gap gets bigger every year, there's no chance Spurs will finish top 4.
In my opinion the gap isnt getting bigger at all. If anything none of the so called big 4 are in any better position squad wise than last season, in fact you could argue they are worse, and with the exception of Arsenal this can be seen by their laboured starts.
United have lost Ronaldo and Tevez. Yes they have replaced them but they need to gel, and this could take time. They are hardly firing at present. They struggled to overcome Birmingham, and ran out of ideas last night.
Chelsea didnt bring anyone of significance in either, yes they have the Russain guy but until he starts playing we wont know what to expect. They too havent started well, they are learning a new system and Hull proved that if you get at them they are fragile.
Liverpool have signed Johnson, who appears a good signing but lost Alonso. They seem no better than last season, and when they come up against sides with quality they struggled, evident at WHL on the opening day.
Arsenal look good, but until they face a side without issues we wont know what to expect. They lost Toure and Adebayor, but most Arsenal fans I know think they are better off without them. However, they lack strength in depth, talent there but still unproven.
As for Spurs (I could mention City, but as the main argument appears to be about Spurs I wont) they for once havent upset the apple cart and signed half a squad this summer, and this could be why they started well, and could be dangerous this season. Harry has sorted the problem and the team are playing very well.
If anything they are better off than last season (performances support this) and all the top 4 weaker or no better off. That doesnt strike me as the gap getting wider.
People are forgetting Spurs were unbeaten against the top 4 at home last season, beating Liverpool and Chelsea, should have beaten Arsenal and drew with a Ronaldo Man Utd. They drew away to Arsenal (could have lost, but the comeback shows how far they have progressed), drew with Chelsea, when they were on that terrible run and only lost to United when the ref gave that penalty after being 2-0 up and comfortable.
While I still dont think they will break the top 4 this season, but they will give it a very good go, I would say they are closing the gap team wise rather than it getting bigger.
They play both Utd and Chelsea in a couple of weeks and if they come out of those games with points maybe peoples opinions will be different.