Jay Bothroyd says he should have been awarded a penalty instead of being booked for diving in Cardiff's 1-1 draw with play-off rivals Sheffield United.The Bluebirds striker had put his side ahead before the break but was then booked on the hour, five minutes before United levelled through Stephen Quinn. [LNB]It was Bothroyd's 10th yellow card of the season meaning he will miss the next two games through suspension. [LNB]"Their centre-half [Nyron] Nosworthy said it was a penalty," he said. [LNB]"I lined a shot up in the box and he's pushed me on to the ball. [LNB]"When you are running at that pace, the slightest bit of contact can knock you off balance and that's what he did. [LNB]"I was disappointed first of all not to get a penalty and then second of all that he [Danny McDermid] booked me." [LNB]"I'm disappointed because I have to miss two games." [LNB]Bothroyd, who will now miss Saturday's trip to Crystal Palace and next Tuesday's visit of play-off chasing Leicester, hit out at the standard of refereeing in the Championship. [LNB]"The last two bookings have been totally ridiculous," he added. [LNB]"I think that's the difference between the Premier League and the Championship. Players need protection. [LNB]"Sheffield United had five guys on yellow cards and they should've had a couple of sendings off - it's inconsistency."[LNB] [LNB][LNB]Bothroyd 'should have had penalty'[LNB]The draw will be more beneficial to Cardiff who occupy the last play-off spot as they increased the gap between themselves and Blackpool - who are one place behind - to five points. [LNB]United are also five adrift of the Bluebirds in eighth. [LNB]But Bothroyd, who claimed his 11th goal of the season with a fine strike, insists Cardiff are focusing on the teams immediately above them who they now trail by two points. [LNB]"We are disappointed not to get the right result but in the last three games, we've got seven points," he said. [LNB]"The people were are chasing, Swansea [in fifth] and Leicester [in fourth], dropped points so it's a point gained. [LNB]"We are not looking below us, we're looking up."