Can low sperm quality lead to blighted ova?

When my husband visited the urologist, I didn't come along because I had to work, but now I wish I had. He was diagnosed with low sperm count, low sperm quality, and low sperm motility. The one pregnancy we have achieved was over a year ago, and it turned out to be a blighted ovum. My luteal phase may be an issue (my doc says it is borderline, and he thinks I might not have ovulated some months), but I recall my midwife telling me that blighted ova are usually caused by a bad DNA match between the particular egg and particular sperm. Well, if my husband has low quality sperm, does that mean there will be more blighted ova if we achieve pregnancy at all? My husband seems to think that the bad quality sperm will not penetrate an egg at all, therefore causing no pregnancy whatsoever, and that any pregnancy we achieve will be from those of his sperm which are higher in quality. Still, I was not there to ask.