Hang on. I know VGChartz numbers are seriously dodgy but from their data gathering from real sources, isn't it the case that XB360 had a lead of ~5 million when PS3 launched, and has a lead of ~5 million now? So at the end of the day, the only tactic that has led to XB360 outselling PS3 is launching first. Being cheaper, better, offering developer support etc. has resulted in no more appeal for XB360 than PS3, and the only tactic that really matters is being first out the gate (as long as the rest is 'good enough'). Sony's investment decisions have produced no worse sales than XB360, and at a higher price, which doesn't really scream 'bad investment' to me (whereas losing lots of money does!).
MS had significantly more to overcome. They are not very well liked as a company. Sony has it's share of haters also, but not like Microsoft does, the Sony brand is much more liked. The Xbox brand as well was largely a joke last gen, whereas Playstation was synonymous with gaming. Plus MS knew they would never win in Japan irregardless of what they did, so they had to really perform well in the USA and Europe. If MS just came out first and cheaper, I personally don't think that would have been enough for them to have done as well as they did. They really needed developer support, better multi plats, better online, etc, they needed the whole package to get word of mouth going that they are the better place to both game on and dev on. I can tell you first hand that the plan was to start with the 360 since it was first, then we were all supposed to transition to the PS3 as the main money making platform. That change never occurred because of all the pieces Microsoft got right.
What throws off all the numbers is RROD. The only reason the PS3 is still in the game is because the 360's broke down and it will never shake that imagine. Without that this gen would have been far more brutal for the PS3, but RROD served as the great equalizer this gen. Incidentally, I'd say that the RROD image will probably also affect MS next gen as well.
They didn't spend time or money on hardware QA, was that a tactic? So their rush to be first cost them over a billion dollars. Everything is not as rosy as you paint it for the 360. They got lucky to an extent, Sony handed them the first couple of years, MS just trudged along benefiting.
RROD was clearly a blunder that cost them dearly this gen, but in spite of that they still have done amazingly well. I can safely say I know of no one that predicted how this gen would have turned out. PS3 has a high failure rate as well, the only reason it's not a huge issue is because launch 360's effectively had a 100% failure rate. Still though, looking at both MS and Sony it's pretty clear which one is the hardware company and which one is the software company. I agree that Sony was complacent and handed a lot to Microsoft, but I still firmly believe multi plats, Live, dev support, etc, had more to do with the 360's success.
My biggest gripe, is that while Sony and MS are battling out trying to Raise the bar of what we should expect from our Consoles, the Wii lowers it and gets just as much positive press.
I'd don't care for the Wii much myself (don't even have one) but I really appreciate what it's done for the industry. I love what MS and Sony do as well, but they are helping no one if they are bleeding themselves dry in the process and/or causing an unstable industry.