U should go with j7. mi4i honor 7 has low exapandable memory but j7 supports upto 128gb. Comparing the performance j7 is better u r gaming.lover I prefer to buy j7 even more heavier games like n.o.v.a 3 asphalt 8 mc5.
Fifa 15 are running smoothly with out any issues it has no heating issues cemera is good of j7 it has many modes and video it records 3ofps and super amoled display is good which gives super colour reproduction.