Not really. I can quote one battle, i.e. battle of Badar, when Muslims won against all odds. It is not only better equipped or trained army for the winning criteria, the spirit and just reason for the battle or any war also counts.
Good counter argument Sherdil. In fact this is yet another example of Islamic lollypop that solely focuses on Bahadur Muslims while completely ignoring some of the fundamental war fighting aspects.
Here is my view of the Ghazwas. Notice that I am going to use Makkah vs. Madina terms, so that emotions do not get in the way of an objective analysis. For a moment we'll also assume that there was no "Ghaibana power" either. Here is the purely war-fighting analysis that expands your argument. Hopefully you will like it.
Remember Badr was only Makkah Madina War (MMW)-I
--- Makkans under estimated and suffered defeat
It was followed by MMW-II or Ohud
--- Makkans were better prepared, and Muslims suffered badly while almost losing the battle.
Then there was MMW-III or Khandaq
--- This time Makkans came around with overwhelming force and there was no way in heck the Madenans would have faced them out in the open. That's why the plan to dig the ditch was put in place.
The biggest weakness of Makkans in all the three wars was that they could not protect their logistic lines. They were using camel back caravans to get the supplies. This type of supply line is always vulnerable to guerilla attacks by either the pro-Medina tribes, or simply the desert thugs looking for a quick loot.
Had the Makkans had access to alternative methods of resupply, they would have stayed longer and possibly defeated Madinans.
In every war out of the three MMW, Makkans were negotiating 300 km or so long logistical supply lines. If they had a quick war, Madinans were at a disadvantage. However if the war could be prolonged, poor logistics got in the way of Makkans.
Still, at the end of MMW-III (khandaq), Madinans were forced to sign a humiliating treaty called Hudabiya. Big name Madina leaders like Omar rah are on record protesting some of the main clauses of Hudaibya.
Thus Madinan strategy of less than perfect peace treaty, home defense, mixed with their opponent's weak logistic lines (and in some cases their power to disrupt Makkan's logistics) won.
Fast forward to the lollypop of Tipu, you can clearly see that Haider Ali (Tipu's father) and then Tipu won some battles initially. But the logistic supply lines of British were never disrupted in a significant way.
This allowed British to build up their force and finally defeat Tipu.
Had Tipu been a bigger leader than just being a local Nawwab, he would have been able to raise his own deep sea naval force. This was the only way to challenge the British supply lines and possibly defeating them.
Post Script
If you are interested, then study a bit of the history of European-European wars. Only then you will realize that Tipu was a light weight, who tried to challenge much bigger, well built opponent.