bulk versus name brand powders

[Danbireland]

I currently buy my whey and creatine from a online bulk powder store i can buy it for a fifth so the price my question is would this be in any way inferior to a named brand product?

[Danbireland]

looking at website now the creatine claims to be 99.9% pure micronised and protein claims to be 90% isolate protein
NUTRITIONAL INFORMATION*:

Typical Values per 100g of powder:

Energy 1590 kJ/374 kcal

Protein 90.0g

Carbohydrate 2.0g (of which sugars) 2.0g

Fat 1.0 g

*Typical values calculated as an indication only

ALLERGEN LIST: The following allergens are present by direct incorporation due to the nature of the raw material used in production:

Cow’s milk protein • Lactose • Soya • Natural colours

TYPICAL AMINO ACID PROFILE (% of protein):

• Alanine 5.0 • Arginine 2.1 • Aspartic acid 11.0 • Cystine 2.2 • Glutamic Acid 18.1 • Glycine 1.4 • Histidine 1.7 • Isoleucine* 6.4 • Leucine* 10.6 • Lysine 9.6 • Methionine 2.2 • Phenylalanine 3.0 • Proline 5.5 • Serine 4.6 • Threonine 6.7 • Tryptophan 1.4 • Tyrosine 2.6 • Valine* 5.9 * = BCAA TYPICAL MINERAL PROFILE: • Sodium (Na): 0.30% • Potassium (K): 0.50% • Calcium (Ca): 0.48% • Phosphorus (P): 0.22% • Magnesium (Mg): 0.06% • Chloride (Cl): 0.1%