Celtic and Rangers both dropped points on Sunday after wins for leaders Hearts and in-form Motherwell 24 hours earlier "The two teams from Glasgow have buckled under the pressure." That was the assessment of former Scotland midfielder Michael Stewart after the Scottish Premiership title race delivered yet another weekend of high drama. With Rangers held to a 2-2 draw at bottom club Livingston and defending champions Celtic beaten at home by Hibernian on Sunday, Hearts boss Derek McInnes must have been watching on with a big grin. Having eked out a narrow win over Falkirk 24 hours earlier his side now lead Rangers by four points and Celtic - who have played a game fewer than the teams above them - by six with 10 matches left. The other big winners over the weekend were fourth-placed Motherwell, with their 5-0 thumping of St Mirren. Jens Berthel Askou's side also have a game in hand on the top two, trailing Hearts by 10 points.…