I kick ass all the time on my THM. I have high INT and PIE and my main nuke affinities are 80+.

The kicker is .... I use CON nukes with "One with Nature" and Shadowsear. Prof II Blood Rite II Chainspell. Abuse the mob's weak element and you will drop jaws! Just intelligently manage your cooldowns to maximize the damage.

edit: Anyone else notice that CON affinity with One with Nature is not 100 anymore? Chainspell CD > 5m