Yes, that's one of the reasons I'm not a huge fan of selling synthetic covered calls ... you have to make sure you set up your LEAPS really well, in terms of both price and time. In essence, you have more opportunities to make a bad mistake.
WIth owning shares, you "just" have to kind of get your entry average buy price right - there's no theta decay issue. Also, you get the dividends of the stock.
But one of the key advantages of LEAPs is that you tie up much less capital overall, while maintaining the same potential for upside (and downside), as long as you set up your LEAPS properly.
Like a lot of things in investing/trading, there's prolly some out there that can make it work really well.