That's a complete fucking lie.
Ferocity
2% damage increase for free. That's 66% of what a 21 point investment got you in previous seasons. For a T1 mastery.
Feast is godlike.
T3 isn't amazing, but its still raw stats with significant gold value, especially compared to resolve.
T4 are all great.
T5 is free % pen. Directly increases damage. More significant the tankier the target is.
Cunning
Savagery makes last hitting under tower, and in general, incredibly reliable.
Assassin is a free 2% damage increase if you're a solo laner.
Both Merciless and Meditation are extremely useful. They boost your mana regen/damage significantly.
Dangerous Game is incredible for teamfighting.
A ton of flat pen or 5% CDR, able to go above CDR cap. Also significant.
You're probably going to try to make resolve sound good as well, except there's two HUGE differences.
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Nothing in resolve multiplies in any significant way with another mastery.
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Nearly all are extremely situational, unlike ferocity/cunning masteries.