Nah,they are fine.A friend of mine has Mars in Aries and she's a Taurus,I **** her off so fast,but other than that thankfully she's not the type who holds grudges.She shows it quite easily when she gets pissed and that's why I like her.I like people who show their anger,it's a healthy outlet.
Try Scorpio moon and see what bad temper means and all the feelings how fast they bottle up.And then try to see what placement is more violent...
I wish I had an Aries Mars it's such a nice and positive placement,although I am happy with my Capricorn Mars too,it's just that Aries Mars is easier to express its feelings and that's so good...You should be happy to have it.