These ratios are often used by vendors to underline the 'potency' of their products. Most consumers also assume "8:1" means the product is 8 times more powerful than a "1:1" product.
If not, avoid it - the therapeutic potency might be questionable. Testing for beta-glucan is easy and cheap - so why not do it unless the outcome is not what you want ?
A basic hot water extract (freeze dried) and a full spectrum dual extract (spray dried). The dual extract's particle size is much smaller but the total volume is larger. Smaller particles means better absorption and solubility, which improves bio-availability and therefore therapeutic effect.