Will Greenwood: clash of styles between Harlequins and Saracens should be fascinating Saracens, by contrast, have been more about power. One of their bonus-point wins was against 14 men when Gloucester's Nick Wood was sent off in the first couple of minutes . In the second half Saracens battered Gloucester as they did most of the game against London Irish in the season opener, and did so again quite magnificently in the first half against Bath. Beautiful, brutal stuff that prefers to smash a gain line rather than twist it and turn it. They have huge big runners, great set piece, defensive intensity. They roll into town, roll up sleeves and do a number on teams. And this is where the battle will lie on Saturday - between Saracens, a team who understand the simplicity of a game plan, and Quins, a team who like to make things up on the fly in a flurry of controlled chaos. Sarries can certainly play and offload, but winning the contact comes first. Round the corner they run big, fast men. When they set off from driving play, they suck opponents in and pick off inside shoulders. The opening try against Gloucester was a classic. They dominated the tackle area and Matt Stevens, a prop who plays like a back row forward in a Mr StayPuffed suit, won yet another breakdown penalty. Then came the kick to touch, an awesome drive, a break out, scrum-half Richard Wigglesworth rounded the corner with big runners, a quick recycle and then Joel Tomkins hit a rugby league line and was in under the posts. Simple efficiency and execution. So simple yet so difficult to do and to stop. Against Bath last week, they battered them into submission. Mako Vunipola won a 50/50 ball (they always seem to win the battle of the 50/50s, Paul Gustard chuckling to himself every time), then a great leg drive and, as Bath's covers scrambled across, Saracens got in behind, shifted the ball wide and David Strettle cantered over. Saracens shift defenders into a confined area and challenge them to put them on the deck with straight running. If that does not get them over the try-line, there are no defenders left out wide and they shift it smoothly through international players" hands without any fanfare or extraordinary brilliance and David Strettle is the usual beneficiary. It is a potent mix. Quins do not corral their defenders into tight spaces. They look to stretch them and break them. Their victory against Worcester will highlight the slight difference in these two styles. Quins appreciate the need to win contact areas, to be physical, but they prefer to shift the point of attack with a higher risk policy than Saracens. It is less about big men running straight up and testing the line, and more about footwork and speed to find space just outside of an elbow tackle getting them over the gain line, and allowing the supporting players to flood the channels. Support is best when it does not matter which way the guy in front steps or moves. Normally you need to give a yard or more, because overrunning kills any chance of this working. But when it works, the attacker knows that he just has to pick the line he wants, and go for the space he sees, confident that he can pop the ball up and out of any tackle or position he is forced to fall into. This also allows for a variation of pass that is a nightmare for defenders to deal with. Quins love to shift it up. They love a long pass to stretch initially, then a short pass, tip-tapping like morse code. Their first try against Worcester summed it up beautifully: long pass to midfield, short pop, and then a bust in behind on a half tackle, Chris Robshaw got in on the ball, ripped, and spun onto the next line of defence. He then held off the defender, popped around the back and Danny Care scooted in. They are like pickpocket tango dancers and the whole side commit to it. When it works it is mesmerising. And it will need to this afternoon because Saracens will challenge them on the gain line. Give them something to hit, and Quins might find themselves wishing they were a little less fun and little more efficient.