1 Arsenal star Alexis Sanchez in action The prospect of Sergio Aguero and Alexis Sanchez, two of the Premier League’s best and brightest talents, lining up against each other at the Etihad Stadium was a mouth watering prospect.In the end it was the underrated Santi Cazorla who was the star of the show in a 2-0 Arsenal victory as he scored their penalty and put in the free-kick for Olivier Giroud’s header.But which of the South American stars shined brightest in Manchester? talkSPORT takes a look…PositioningSanchez: With Olivier Giroud starting in a central role for the Gunners, the Chilean forward began the game out on the left flank, stretching the play, but was eager to rotate into a No.10 role with Santi Cazorla and get behind French striker Giroud.Aguero: The South American striker was happy prowling on the shoulder of the Arsenal defence but also showed willingness to drop deeper and link up with his team-mates, with David Silva buzzing around him looking to co-create mischief. While, in the second period, he moved slightly to the right and found more joy.PassingSanchez: The 26-year-old often looked to beat an opponent before passing and lost possession on several occasions as a result. His selfishness cost the Gunners an early chance and a wayward through ball ended up going off the field by the corner flag rather than finding a team-mate.Aguero: Usually on the end of them rather than making them, Aguero’s passing wasn’t really evident during a first half which saw him cut adrift from his team-mates. With Stevan Jovetic joining him in the second half he found it easier to link play. His cool flicked pass nearly got his Montenegrin team-mate on the scoresheet as time wore on.MovementSanchez: From his position on the left flank, Sanchez consistently checked inside onto his right foot as he looked to engage Pablo Zabaleta and right-sided centre-back Vincent Kompany. He found little joy in this and as a result struggled to make a huge impact on the game. He was, though, lucky to get away with being offside for Giroud’s goal as he strayed in front of his colleague and arguably into the eyeline of Hart.Aguero: The Argentine happily drifted out wide to the right early on to create a chance for himself but saw his strike on the angle deflected out for a corner. With the ball in wide positions at the feet of Jesus Navas or James Milner, he often moved back away from Per Mertesacker and Laurent Koscielny or dropped to the back post to allow runners from midfield more space.MentalitySanchez: Always chasing the ball down and never giving Manchester City’s defence a moment’s rest, Sanchez showed how much of a team player he is. Was tasked with penning back the marauding Zabaleta and coped fairly well.Aguero: After a quiet opening period the Argentine looked to have more drive at the start of the second half and, after nearly forcing a penalty, soon had David Ospina scrambling as a deflected shot swept goalwards but in the end Aguero just didn’t get to test his Colombian opponent enough in what was an ultimately frustrating afternoon, which also so him booked for dragging back Kieran Gibbs late on.FinishingSanchez: A wild second half shot, after he finally got the better of Zabaleta, went out for throw in as his frustration began to tell. A thunderous effort with 20 minutes to go forced Joe Hart to palm away, such was its ferocity.Aguero: Arsenal did well to marshal the Argentine and his first three shots were all blocked or deflected away to safety. Had the goal gaping on the hour-mark but was unable to stick the ball away thanks to an excellent intervention from Laurent Koscielny.VerdictNeither Sanchez nor Aguero put in vintage displays as they struggled to make an impact on the match but by proxy, with Cazorla shining alongside him, Sanchez was the better of the two players. His work ethic was impressive and with some better decision making could have helped Arsenal claim another goal or two.Aguero, in his second game back after injury, lacked his usual cutting edge. Instead of forcing saves from Ospina he ended up seeing his few shots cannon off a defender which kept him on a short leash. He will need to get back to his brilliant best quickly if Manuel Pellegrini’s side are to keep up with table toppers Chelsea, who are now five points clear at the top following City’s defeat.