It's interesting that even Sikhi attempts to demonstrate very similar contradictions of Islam that others have presented. Of course, they appeal to Muslims to give up their faith and join their faith instead, which is another debate, but they certainly have better arguments than anything I've seen from other religions perspectives.
"On one hand Allah is considered all loving and the creator and on the other hand is ordering Muslims to be ruthless and merciless to non-believers in verses 48:29, 2:193 and 9:73. Clearly Allah is full of hatred and does not have an iota of compassion or love for his own creation.
Allah is so full of hatred that he talks about “instilling terror into the hearts of the unbelievers” in verse 8:12. Therefore, Allah cannot be all loving and hateful at the same time. Some Muslims claim that this particular verse is applicable only when Muslims are fighting a defensive war. If this is true then two conclusions are drawn. First, Quran’s message is not applicable to all times, all situations and all places. Hence, Quran is only for some people on earth because many communities such as Buddhists do not believe in war and therefore the message of Quran cannot be applied to them. Second, if fighting defensive war is the case then what about Muslim invaders who attacked India numerous times and enslaved thousands of Hindu women?"
http://www.searchsikhism.com/nirgun.html
"On one hand Allah is considered all loving and the creator and on the other hand is ordering Muslims to be ruthless and merciless to non-believers in verses 48:29, 2:193 and 9:73. Clearly Allah is full of hatred and does not have an iota of compassion or love for his own creation.
Allah is so full of hatred that he talks about “instilling terror into the hearts of the unbelievers” in verse 8:12. Therefore, Allah cannot be all loving and hateful at the same time. Some Muslims claim that this particular verse is applicable only when Muslims are fighting a defensive war. If this is true then two conclusions are drawn. First, Quran’s message is not applicable to all times, all situations and all places. Hence, Quran is only for some people on earth because many communities such as Buddhists do not believe in war and therefore the message of Quran cannot be applied to them. Second, if fighting defensive war is the case then what about Muslim invaders who attacked India numerous times and enslaved thousands of Hindu women?"
http://www.searchsikhism.com/nirgun.html