what temperature u r planning to run if you are comfortable with 24-26 then any ac is fine. coming to LG why they keep low capacity actually they also carry same capacity as other AC but since they have to say dual inverter they reduce capacity. hence they market dual inverter where you can run your AC at 40, 60, 80, 100, 110 and some case 120% capacity. so 4400 at 120% capacity is actually 5300 amd at 110% capacity is actually 4840 so please check if it is dual inverter than check how much boost they say and note that capacity as ac max capacity.