How can you beat the elite four with LVL 73 Graydos lvl 72 giginta lvl 71 heatran lvl 43 pupitatr lvl 67 alateris lvl 71 blazekien?

raise all there lvls about 10 lvls and the pupitars raise 15 lvls

UPDATE: Actually, you can beat the elite four with all level 60's. Ive tried. And succeded.