That's exactly the mistake someone else is making. What I'm saying is that if Team A has 30% of the possession it may be in actual control of the game if that's the game plan. It may not, but it may. That Team A sits back, has a cigar for 27 of the 90 minutes and win the game 1-0, as planned. Boring as fekk for Team A supporters and the stench of injustice for Team B supporters who had that 70% possession, but if that's the plan and the plan is executed to perfection with a win then Team A was in control of the match even if Team B won the posession stats war.
On the other hand, if Team A is outdueled in midfield by Team B and Team B carries the day in possession and shots on goal but loses to Team A who fumbled their way though the match but emerged with inglorious victory with a smash-and-grab, then that's another story.
Stats can tell us a lot, but our eyes are a much better guide in telling the story of what really happened on the pitch than any stats sheet.