well HALO may fail on some fronts but on the ground halo would probbaly have the upper hand with spartan lazers/ scarab tanks/ ODST's/ covenant drop pods stealth troops and sheilds i have to say yes the star treck universe may have a match in space but on the ground even though there are more species the mix of unsc and covenent would i have to say even out the playing field not just b cause of the troops but also because of the naval craft the halo series use cause in startreck they dont seem to have many ground vehicles or much in the way of naval atg craft so yes space halo may lose but on the ground with help from a joint force of UNSC/ covenent/ and forerunners they would probs lose or meet a fair match especialy if the covenant can build their super turrets /aa turrets but im probs wrong lol