so that is big NOOO.
even when some coins are more profitable then btc the are usually more profitable by small amount off profitability and not by 4-5 times.
Actually when some "new" coin gets some coverage it often goes up very quickly, e.g. Doge at 400% of Litecoin revenue for a couple of days, Sexcoin was even 10x more profitable than Litecoin for a day or two.
But yes, if you consider the extra time needed to check alternatives that is pretty much a waste of time. 30%+ is fairly common on scrypt currencies, assuming you dont value your time.